Document log file, which replaces the unwind stack.
Document log file, which replaces the unwind stack.

Doing things in a loggy way, rather than a stacky way, removes the
restriction that all tree delta events must happen in a perfectly
nesty way.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion